1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 261Get this manual
8When proper clearance adjustment is achieved, tighten impeller nut to 16-18 ftIbs(22-24 Nm)
[] 9Using new tab-lock washer, bend tabs around driveshaft nut to secure the assembly[] 10Assemble intake housing to jet housingApply OIVIC Gasket Sealing Compound to threads of six retaining screws, and install them finger tight onlyCheck for any rubbing or binding between casing liner and impellerIf clearance is greater on one side, verify that intake housing is centeredTighten screws in crisscross pattern to 60-84 inIbs(7-9 Nm)11Recheck impeller clearance after shimming adjustment has been performed